LOANS HELD FOR INVESTMENT, NET - Financial Effect of Modifications made to Borrowers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Business loans | Interest Rate Reductions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Interest Rate Reductions	5.00%	4.30%
Business loans | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average months of Term Extensions	12 months	13 months
Business loans | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	$ 146	$ 2,406
One-to-four family residential and cooperative/condominium apartment | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average months of Term Extensions	11 months	189 months
One-to-four family residential and cooperative/condominium apartment | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	$ 13	$ 76
Multifamily residential and residential mixed-use | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	306
Non-owner-occupied commercial real estate | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	$ 561	$ 988
Acquisition, development, and construction ("ADC") | Interest Rate Reductions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Interest Rate Reductions	2.00%
Acquisition, development, and construction ("ADC") | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average months of Term Extensions	5 months
Acquisition, development, and construction ("ADC") | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	$ 411